| //===-- ThreadMachCore.cpp --------------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| |
| #include "ThreadMachCore.h" |
| |
| #include "llvm/Support/MachO.h" |
| |
| #include "lldb/Core/ArchSpec.h" |
| #include "lldb/Core/DataExtractor.h" |
| #include "lldb/Core/StreamString.h" |
| #include "lldb/Core/State.h" |
| #include "lldb/Symbol/ObjectFile.h" |
| #include "lldb/Target/Process.h" |
| #include "lldb/Target/RegisterContext.h" |
| #include "lldb/Target/StopInfo.h" |
| #include "lldb/Target/Target.h" |
| #include "lldb/Target/Unwind.h" |
| #include "lldb/Breakpoint/Watchpoint.h" |
| |
| #include "ProcessMachCore.h" |
| //#include "RegisterContextKDP_arm.h" |
| //#include "RegisterContextKDP_i386.h" |
| //#include "RegisterContextKDP_x86_64.h" |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| |
| //---------------------------------------------------------------------- |
| // Thread Registers |
| //---------------------------------------------------------------------- |
| |
| ThreadMachCore::ThreadMachCore (Process &process, lldb::tid_t tid) : |
| Thread(process, tid), |
| m_thread_name (), |
| m_dispatch_queue_name (), |
| m_thread_dispatch_qaddr (LLDB_INVALID_ADDRESS), |
| m_thread_reg_ctx_sp () |
| { |
| } |
| |
| ThreadMachCore::~ThreadMachCore () |
| { |
| DestroyThread(); |
| } |
| |
| const char * |
| ThreadMachCore::GetName () |
| { |
| if (m_thread_name.empty()) |
| return NULL; |
| return m_thread_name.c_str(); |
| } |
| |
| void |
| ThreadMachCore::RefreshStateAfterStop() |
| { |
| // Invalidate all registers in our register context. We don't set "force" to |
| // true because the stop reply packet might have had some register values |
| // that were expedited and these will already be copied into the register |
| // context by the time this function gets called. The KDPRegisterContext |
| // class has been made smart enough to detect when it needs to invalidate |
| // which registers are valid by putting hooks in the register read and |
| // register supply functions where they check the process stop ID and do |
| // the right thing. |
| const bool force = false; |
| GetRegisterContext()->InvalidateIfNeeded (force); |
| } |
| |
| bool |
| ThreadMachCore::ThreadIDIsValid (lldb::tid_t thread) |
| { |
| return thread != 0; |
| } |
| |
| lldb::RegisterContextSP |
| ThreadMachCore::GetRegisterContext () |
| { |
| if (m_reg_context_sp.get() == NULL) |
| m_reg_context_sp = CreateRegisterContextForFrame (NULL); |
| return m_reg_context_sp; |
| } |
| |
| lldb::RegisterContextSP |
| ThreadMachCore::CreateRegisterContextForFrame (StackFrame *frame) |
| { |
| lldb::RegisterContextSP reg_ctx_sp; |
| uint32_t concrete_frame_idx = 0; |
| |
| if (frame) |
| concrete_frame_idx = frame->GetConcreteFrameIndex (); |
| |
| if (concrete_frame_idx == 0) |
| { |
| if (!m_thread_reg_ctx_sp) |
| { |
| ProcessSP process_sp (GetProcess()); |
| |
| ObjectFile *core_objfile = static_cast<ProcessMachCore *>(process_sp.get())->GetCoreObjectFile (); |
| if (core_objfile) |
| m_thread_reg_ctx_sp = core_objfile->GetThreadContextAtIndex (GetID(), *this); |
| } |
| reg_ctx_sp = m_thread_reg_ctx_sp; |
| } |
| else |
| { |
| Unwind *unwinder = GetUnwinder (); |
| if (unwinder) |
| reg_ctx_sp = unwinder->CreateRegisterContextForFrame (frame); |
| } |
| return reg_ctx_sp; |
| } |
| |
| lldb::StopInfoSP |
| ThreadMachCore::GetPrivateStopReason () |
| { |
| ProcessSP process_sp (GetProcess()); |
| |
| if (process_sp) |
| { |
| const uint32_t process_stop_id = process_sp->GetStopID(); |
| if (m_thread_stop_reason_stop_id != process_stop_id || |
| (m_actual_stop_info_sp && !m_actual_stop_info_sp->IsValid())) |
| { |
| if (IsStillAtLastBreakpointHit()) |
| return m_actual_stop_info_sp; |
| |
| // TODO: can we query the initial state of the thread here? |
| // For now I am just going to pretend that a SIGSTOP happened. |
| |
| SetStopInfo(StopInfo::CreateStopReasonWithSignal (*this, SIGSTOP)); |
| |
| // If GetKDPProcess().SetThreadStopInfo() doesn't find a stop reason |
| // for this thread, then m_actual_stop_info_sp will not ever contain |
| // a valid stop reason and the "m_actual_stop_info_sp->IsValid() == false" |
| // check will never be able to tell us if we have the correct stop info |
| // for this thread and we will continually send qThreadStopInfo packets |
| // down to the remote KDP server, so we need to keep our own notion |
| // of the stop ID that m_actual_stop_info_sp is valid for (even if it |
| // contains nothing). We use m_thread_stop_reason_stop_id for this below. |
| // m_thread_stop_reason_stop_id = process_stop_id; |
| // m_actual_stop_info_sp.reset(); |
| |
| } |
| } |
| return m_actual_stop_info_sp; |
| } |
| |
| |